The correct answer is C. high speed, large-capacity disk.
A database management system (DBMS) is a software application that allows users to create and manage databases. A database is a collection of data that is organized in a way that makes it easy to retrieve and use. DBMSs are used in a variety of applications, including business, government, and education.
The most important hardware component for the operation of a DBMS is a high speed, large-capacity disk. This is because the database itself is stored on the disk, and the DBMS needs to be able to access the database quickly and easily. A high speed disk will allow the DBMS to retrieve data from the database quickly, while a large-capacity disk will allow the DBMS to store a large amount of data.
The other options are not as important for the operation of a DBMS. A high-resolution video display is not necessary for the DBMS to function, and a printer is only necessary if the user needs to print out reports or other output from the DBMS. A plotter is a type of printer that is used to create large-format drawings, and it is not necessary for the operation of a DBMS. A mouse is a pointing device that is used to interact with the user interface of the DBMS, but it is not necessary for the DBMS to function.
In conclusion, the most important hardware component for the operation of a DBMS is a high speed, large-capacity disk.